Bar-cutting apparatus.



C. K. BRYCE. BAR CUTTING APPRATUS.

' APPLICATION FILED AUG.16. i916.

1,260,3 1 6, Patented Mar, 2 6, 1918.

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Be it known that` I, .C Amma Bnrcn, `v.` cit'.ii";e1`1gl of! the United States, residing at Cranford, countyof.` Union, and 4Siate 4of LNeWJJersey, have invented certain new .and

acetylene or similar blowppe pr"t'orc1l1n,,

narrow utgine simple @nd expeditious man nen- To this andothenends the invention tionsfherensftendescribed.

becllh Fig. 2 is gi. rear elevahon.

wor the flatter hig :the mund han 1 1- 'wing me 1-fiek Bpecicotion of-Iie'tter Patent; 'Patnted Mgr. 26, 1918.

Application nled August 16, 1918v Serial No. 115,142.

vsowthatzithe Blowpipe can be .wocura'ely ald;- 55

justed up orrdown with res ect tolthe work 1v1, Atthejupperendof 't' eblow'p are the usuel nipples 22, "23, 'and regu atn ,valves-'245 25, for connection by lmeans o haped to turn the wheel at high enough, toA .insure practically perfect 4Vcontrol ,.of the y jerkyr uneven motion that Would'- be apt 'to'occur if the blowpipe were moved directly lor at the same rate as the operator-s hand.

arms 26, 27, are pinned, extend through to the back oit the V-shaped casting or support, and on their rear ends are pinned two shorter arms 35, 36, of equal length, con nected by a link 37. This link is not essential, but it is convenient, since, being of the same length as the distance between the shafts 28, 29, it insures constant parallelism ofthe arms 26., 27 and hence facilitates ad- .-jnstment of the blowpipecarrier toward and from said shafts. Fixed' on the lower shaft, 29, is a lWorm gear 38, meshing with a worm 39 pinned to the transverse shaft 40 which is journaled in bosses 41 on the sup f port 10. A hand-wheel or crank disk 42 is fixed on the support end o the shaft. Ro-

tation of the shaft, by. the handwheel or by a suitable motor (not shohvn)` .then swings the arms 26, 27,v and carriesthe blowpipe slowly across lthe bar 11. The use of speedreducing gearing betweenv the handivh'ecl and the swinging arms is an advantageous feature, inasmuch as it 4permits the operatormovement of the' blowpipe` without the The machine being clamped on the bar which is to be and the blowpipe being adjusted inthe supporting arms tobring the nozzle to the proper position with respect to the'bar, the blowpipe is lighted'and "the lrandwvheel is turned. Thisv'swingsthesup porting arms on their centers' and carries the bloi-vpipe across the'work, maintaining-i the blowpipe in constant parallelism with 'itself with the nozzleal'waysat the same distance ,riceeds-apidly,

mg" the-liandewheel.. When the out ,istfnfrom; the surface of the bar. The cutting the xoperator simply turns'hed the blowpipe need not ,be brought back its original'position, since -the'lnext :out

can be made by reversing the rotation of the hand-Wheel.

It is to be understood that the inventioi'i is not limited to the apparatus herein specifi-- cally illustrated and described but can be embodied in other forms Without departure from its spirit.

l. In a bancu'tting apparatus, in combina tion, a Support adapted to,v be seated on a bar,' a blo'wpi-pe carrier, .and supporting means forthe carrier, pivoted to a Station ary part of the support and compelling the carrier to move independently of the 'bar in an arc-shaped path. concentric therewith.

2. In a bar cutting ap aratus, in combina tion7 a support adapte to be Seated on a bar, a pair of pivots mounted in a station ary part of the support and alined with the axis of the bar, a pair of parallel arms fixed to the pivots at one end thereof, a pair of parallel arms -xed to the pivots at the other end thereof,a link connecting the second -pair of arms'to 'maintain the lparallelism of both pairs of arms, a blowpipe Carr-ier -pivotally supported by thefirst pair of arms at points equidis'tant fromsaid pivots, andv meansrfor rocking one of said pivots to swing both .pairs of arms Aand move'the carrier in an arc-shapedpath acrossl the bar independently thereof. f

3. In a bar-cutting apparatus, in' combination, a Asupport adapted. 'to be seat-edema bar, a pairo parallel armsnplvoted one above the other and above they-baron astationary part-of the support, a blowpipe carried by and connecting the. arms, aworm gear .connected to one of the arms ito swing.

the same, a Worm meshing with .the-gear,

and means for rotatingy the wormi i In 4testimony.whereof I hereunto aflx'my \=signature. f 

